public Action:OnPlayerRunCmd(client, &buttons, &impulse, Float:fVel[3], Float:fAngles[3], &weapon)
{
  if(IsPlayerAlive(client) && autobhop[client] && GetEntityFlags(client) & FL_ONGROUND && buttons & IN_JUMP)
  {
   static Float:fVelocity[3];
   GetEntPropVector(client, Prop_Data, "m_vecVelocity", fVelocity);
   fVelocity[2] = g_iGravity / 2.5;
   TeleportEntity(client, NULL_VECTOR, NULL_VECTOR, fVelocity);
  }
  return Plugin_Continue;
}